Gate valve for irrigation pipes



Oct. 30, 1962 F. J. HoFFKNEcH'r GATE VALVE FOR IRRIGATION PIPES OriginalFiled June 24. 1958 I M/ 04N lm/1WD... Hm ,m C .R Em o I m K 1 F 1 F 1 at M F. M z /zm M 52 W 2 4 :7 2 4 2I n 0\ Al): x. fIH ||H..u KW7'. H 9./M o o /lyl 3 2. l- 0 2 a 4 2 2 Y.: r9 2 4|.lv 2

United States Patent O 3,061,266 GATE VALVE FOR IRRIGATION PIPES FrankJ. Hotlknecht, 3393 Snelling Highway, Merced, Calif.

Original application `Iune 24, 1958, Ser. No. 744,106, now Patent No.2,940,723, dated June 14, 1960. Divided and this application Apr. 20,1960, Ser. No. 23,416

4 Claims. (Cl. 251-147) This invention relates to a gate valve forirrigation pipes, and comprises a division of my co-pending applicationSerial No. 744,106, filed June 24, 1958, now Patent No. 2,940,723, lune14, 1960.

A primary object of the invention is the provision of an improved gateand showing a substantially watertight closure when in closed position,but which is readily movable to open position with a minimum of effortand diculty.

An additional object of the invention resides in the provision of animproved sealing construction including -a rubber diaphragm or gasket,and means for securing the same in Sealing relation with the end of thepipe.

A further important object of the invention resides in the provision ofanchoring flanges associated with the gate per se, and showing a tightmortar iilled joint with the gate in the end of the pipe to which it isapplied.

Still another object of the invention is the provision of a device ofthis character which is sturdy and durable in construction, reliable andefficient in operation and relatively simple and inexpensive tomanufacture, assemble and install.

Still other objects reside in the combinations of elements, arrangementof parts, 4and features of construction, all as will be more fully.pointed out hereinafter, and disclosed in the accompanying dnawing.

In the drawing:

FIGURE l is a top plan view of one form gate or gate valve embodyingfeatures of the instant invention, as applied to a pipe.

IFIG. 2 is an enlarged -front elevational vieW of the gate of FIG. l.

FIG. 3 is an enlarged sectional'view taken substantially `along the line3-3 of IFIG. 1 as viewed in the direction indicated by the arrows.

FIG. 4 is an enlarged sectional view taken subst-antially along the line4--4 of FIG. 2 as viewed in the direction of the arrows.

Similar reference characters refer to similar parts throughout theseveral views of the drawing.

Having reference now to the drawing in detail, the valve assembly of theinstant invention is generally indicated at 10, and comprises a valveseat member 11 and a valve or gate member 12. The valve seat member 11includes a substantially rectangular plate portion 13, which is providedwith -a central circular opening 14, the edges of which are inwardlyturned as at 15 to provide flanges, to which is secured a tubular collar16, in any desired manner yas by Welding. The upper and lower edges ofthe plate 13 are outwardly turned as at 18 to provide horizontal ilanges18, the ends of which are inwardly turned to provide vertical anges 19,the purpose of which will be more fully described hereinafter.

The side edges of the plate 13 are oppositely curled or reverted asindicated `at 20, to provide guide tracks for the gate member 12.

.The inner edges of the reverted portions 20 are ilattened as shown at21 (see FIG. 4) to provide guide tracks `against which rest theobliquely angled side edges 22 of a front plate 23, which comprises themain element of the valve or gate member 12. The plate 23 is providedwith a central aperture 25, having an inwardly l. Y Patented Oct. 30,1962 2 Y Y extending ilange 26, the opening being closed by a rubberdiaphragm of relatively thick rubber 27, the side edges of which aresecured in the inturned ends 28 of the obliquely angled portions 22 andclamped thereby. The

top edge of the rubber diaphragm 27 extends forwardly and outwardly overa lip 29 at the top of the gate or valve, which lip serves as a handgrip for raising and lowering the valve to open and close the same, andthe edge 30 of the portion 29 is inwardly reverted and clamped over theupper edge of the rubber diaphragm 27.

The rubber diaphragm 27 has aflixed to the center thereof a metallicdisc 35, for reinforcing purposes, the disc being engaged by atransverse strip 36, one end of which is suitably secured as by spotwelding or rivets 37 to one side of the plate 23, while the other end isreleasably secured interiorly of a retaining strip 38 which is suitablysecured as by means of `rivets 39 at the opposite ends to the outer faceof the plate 23. A clamping rod 40 is provided which has an offsetcentral portion 41 in alignment with the strip 36, and a right angularlydisposed handle portion 42. The rod 40 is held in position by upper andlower bearing strips 43 and 44 which are secured in position as by meansof rivets `45 and 46 respectively to `the front plate 23.

=In the assembly of the device the collar 16 is so dimensioned as to tsnugly Within the interior of a conventional irrigating pipe P, which isprovided with the customary reduced end portion 50, which seatsexteriorly of the collar 16.

The interior formed by the iianges 18 and 19 is solidly packed withmortar M. Suitable flanges 51 are also provided along the sides of theplate 23, as best shown in FIG. 4, and have inwardly, turned extremities52, the flanges 51 and 52 corresponding in conguration and dimensions tothe flanges `18 and 19, and serving a similar purpose along the sideedges of the device, mortar being also rmly packed between these langesand the reduced end 50 of the pipe.

In the use and operation of the device when it is desired to open thevalve, the handle 42 of the rod 40 is moved to such `a position thatpressure is no longer exerted by the offset portion 41 against the strip36, and consequently the rubber diaphragm 27 and the gate may be openedby raising the lip portion 29.

When the gate is closed, movement of the handle to a position to engagethe offset portion 41 against the strip 36 will compress the disc 35,and press the rubber diaphragm 27 partially into the opening 14 toeffectively seal the end of the pipe P.

By virtue of the flanges 18, 19 and 51 and 52, and the mortar packinginteriorly thereof and around the reduced end 50 of the pipe, a rm andsecure and substantially complete watertight seal is provided.

From the foregoing it will now be seen that there is' herein provided adevice which accomplishes all of the objects of this invention, andothers, including many advantages of great practical utility andcommercial importance.

As many embodiments may be made of this inventive concept, and as manymodifications may be made in the embodiment hereinbefore shown anddescribed, it is to Ibe understood that all matter herein is to beinterpreted vmerely as illustrative and not in a limiting sense.

WhatIclaim is:

l. In a gate valve construction, an apertured plate having a laterallyextended collar fitting within the end 0f a pipe, a gate member mountedon said plate having a central circular opening7 a rubber diaphragm onsaid plate directly over said circular opening, a metallic disc of adiameter less than said circular opening contacting said rubberdiaphragm, and mechanism for effecting movement of said rubber diaphragminwardly in contact with the wall of said opening, closing said opening.

2. The subject matter as claimed in claim 1, and said diaphragmoperating mechanism embodying a clamping rod pivotally mounted on saidgate member, said rod having a central offset portion contacting saidmetallic disc for moving said disc and portion of said diaphragm vm'thwhich the disc contacts into said aperture, closing said valve.

3. In a gate valve construction,an apertured valve seat plate having alaterally extended collar surrounding said aperture, said collar beingsecured within one end of a pipe, the opposite side marginal edges ofsaid plate being curvedv inwardly providing a guide track, a gate memberslidable within said guide track, said gate member having a centralopening, a plastic, yieldable diaphragm secured on said gate memberoverlying said opening, a metal disc movable through the opening 20 4.In a gate valve construction, an apertured valve `seat plate tted overone end of a pipe, inwardly curved yieldable anges formed along theedges of said valve seat plate providing a track, a gate valve memberhaving a central opening, slidable under said flanges of said track, arubber diaphragm secured to one side of said gate valve member overlyingsaid central opening, a metal disc engaging the central portion of saiddiaphragm, a transverse strip seclured to Said gate valve member,resting against said metal disc, a clamping rod having an otset portionengaging said transverse strip, adapted to force said disc and portionof said diaphragm into the aperture of said valve seat plate, closingsaid valve, and a handle at one end of .said clamping rod for effectingmovement of said clamping rod.

References Cited in the le of this patent UNITED STATES PATENTS1,141,374 Bowen June 1, 1915 2,211,167 Satford Aug. 13, 1940 2,940,474Webster June 1, 1960

